Abstract
The random shapes of pore throats in geomaterials hinder accurate estimation of capillary pressure, and conventional pore network models that simply use the Young–Laplace equation assuming circular pore throats overestimate the capillary pressure. As a solution to this problem that does not complicate the pore network model or slow its implementation, we propose a new morphological analysis method to correlate the capillary pressure at an irregular pore channel with its cross-sectional geometry using lattice Boltzmann (LB) simulation and Mayer and Stowe–Princen theory. Geometry-based shape factors for pore throats are shown here to correlate strongly with the capillary pressure obtained by LB simulation. Water retention curves obtained by incorporating the morphological calibration into conventional pore network simulation and their correlative scheme agree well with experimental data. The suggested method is relevant to pore-scale processes such as geological CO2 sequestration, methane bubbling from wetlands, and enhanced carbon recovery.
| Original language | English |
|---|---|
| Pages (from-to) | 51-58 |
| Number of pages | 8 |
| Journal | Advances in Water Resources |
| Volume | 110 |
| DOIs | |
| Publication status | Published - 2017 Dec |
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All Science Journal Classification (ASJC) codes
- Water Science and Technology
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Capillary pressure at irregularly shaped pore throats : Implications for water retention characteristics. / Suh, Hyoung Suk; Kang, Dong Hun; Jang, Jaewon; Kim, Kwang Yeom; Yun, Tae Sup.
In: Advances in Water Resources, Vol. 110, 12.2017, p. 51-58.Research output: Contribution to journal › Article
TY - JOUR
T1 - Capillary pressure at irregularly shaped pore throats
T2 - Implications for water retention characteristics
AU - Suh, Hyoung Suk
AU - Kang, Dong Hun
AU - Jang, Jaewon
AU - Kim, Kwang Yeom
AU - Yun, Tae Sup
PY - 2017/12
Y1 - 2017/12
N2 - The random shapes of pore throats in geomaterials hinder accurate estimation of capillary pressure, and conventional pore network models that simply use the Young–Laplace equation assuming circular pore throats overestimate the capillary pressure. As a solution to this problem that does not complicate the pore network model or slow its implementation, we propose a new morphological analysis method to correlate the capillary pressure at an irregular pore channel with its cross-sectional geometry using lattice Boltzmann (LB) simulation and Mayer and Stowe–Princen theory. Geometry-based shape factors for pore throats are shown here to correlate strongly with the capillary pressure obtained by LB simulation. Water retention curves obtained by incorporating the morphological calibration into conventional pore network simulation and their correlative scheme agree well with experimental data. The suggested method is relevant to pore-scale processes such as geological CO2 sequestration, methane bubbling from wetlands, and enhanced carbon recovery.
AB - The random shapes of pore throats in geomaterials hinder accurate estimation of capillary pressure, and conventional pore network models that simply use the Young–Laplace equation assuming circular pore throats overestimate the capillary pressure. As a solution to this problem that does not complicate the pore network model or slow its implementation, we propose a new morphological analysis method to correlate the capillary pressure at an irregular pore channel with its cross-sectional geometry using lattice Boltzmann (LB) simulation and Mayer and Stowe–Princen theory. Geometry-based shape factors for pore throats are shown here to correlate strongly with the capillary pressure obtained by LB simulation. Water retention curves obtained by incorporating the morphological calibration into conventional pore network simulation and their correlative scheme agree well with experimental data. The suggested method is relevant to pore-scale processes such as geological CO2 sequestration, methane bubbling from wetlands, and enhanced carbon recovery.
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U2 - 10.1016/j.advwatres.2017.09.025
DO - 10.1016/j.advwatres.2017.09.025
M3 - Article
AN - SCOPUS:85042196538
VL - 110
SP - 51
EP - 58
JO - Advances in Water Resources
JF - Advances in Water Resources
SN - 0309-1708
ER -